Merge tag 'devicetree-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/robh...

[firefly-linux-kernel-4.4.55.git] / Documentation / devicetree / bindings / leds / backlight / tps65217-backlight.txt

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+TPS65217 family of regulators
+
+The TPS65217 chip contains a boost converter and current sinks which can be
+used to drive LEDs for use as backlights.
+
+Required properties:
+- compatible: "ti,tps65217"
+- reg: I2C slave address
+- backlight: node for specifying WLED1 and WLED2 lines in TPS65217
+- isel: selection bit, valid values: 1 for ISEL1 (low-level) and 2 for ISEL2 (high-level)
+- fdim: PWM dimming frequency, valid values: 100, 200, 500, 1000
+- default-brightness: valid values: 0-100
+
+Each regulator is defined using the standard binding for regulators.
+
+Example:
+
+       tps: tps@24 {
+               reg = <0x24>;
+               compatible = "ti,tps65217";
+               backlight {
+                       isel = <1>;  /* 1 - ISET1, 2 ISET2 */
+                       fdim = <100>; /* TPS65217_BL_FDIM_100HZ */
+                       default-brightness = <50>;
+               };
+       };
+